药物作用的选择性应是 :
A. 药物集中在某靶器官多
B. 器官对药物的反应性高或亲和力大
C. 器官的血流量多
D. 药物对部分器官、组织都有明显效应
E. A+B+C+D
β1 receptor locate in ( )
A. myocardia tissues
B. vascular smooth muscles
C. bronchial smooth muscles
D. iris muscles
E. Gut smooth muscles
Thermoregulatory sweat glands in the body utilize what type of pathway?(
A. Cholinergic nerves and muscarinic receptors
B. Adrenergic nerves and alpha-1 receptors
C. Adrenergic nerves and beta-2 receptors
D. Cholinergic nerves and NM receptors
E. Neurohumorally-released epinephrine
F. Neurohumorally-released epinephrine
Which of the following routes of administration has the highest bioavailability?
A. Intramuscular
B. Intravascular
C. Oral
D. Sublingua
E. Subcutaneous
F. Sublingua
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